Influence of pore size on penetration of surface modification into woven fabric treated with atmospheric pressure plasma jet

Wang, C.X.; Du, Ming; Qiu, Yu

doi:10.1016/j.surfcoat.2010.08.056

Cited by 13 publications

(4 citation statements)

References 23 publications

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“…For the charge compensation, when each oxygen ion with two negative charges changed into an oxygen vacancy with one positive charge in the lattice, three electrons were left and reduced the zinc ions. On the one hand, studies have shown that higher porosity, better pore connectivity and larger pore size promote plasma penetration into porous materials [28,29]. Therefore, the porous structure of the ZnO green billet enabled the penetration of high-energy electrons, ions such as Ar + , and other active particles from the surface of the sample to the interior.…”

Section: Resultsmentioning

confidence: 99%

Dielectric barrier discharge based defect engineering method to assist flash sintering

Zhao¹,

Yan²,

Li³

et al. 2023

Journal of Advanced Ceramics

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Oxygen vacancy plays an important role in the flash sintering (FS) process. In defect engineering, the methods to create oxygen vacancy defect include doping, heating, and etching, and all of them often have complex process or equipment. In this study we used dielectric barrier discharge (DBD) as a new defect engineering technology to increase oxygen vacancy concentration of green billet with different ceramics (ZnO, TiO2 and 3 mol% yttria-stabilized zirconia (3YSZ)). With a 10 kHz AC power supply, the low-temperature plasma was generated and the specimen could be treated in different atmosphere. The effect of DBD treatment was influenced by atmosphere, treatment time, and voltage amplitude of power supply. After DBD treatment, the oxygen vacancy defect concentration in the ZnO samples increased significantly, and the resistance test showed that the conductivity of the samples increased by 2-3 orders of magnitude. Moreover, the onset electric field of ZnO FS decreased from 5.17 kV/cm to 0.86 kV/cm at room temperature, while in the whole FS the max Power dissipation decrease from 563.17 W to 27.94 W. The defect concentration and conductivity of the green billets for TiO2 and 3YSZ also changed by DBD, and then the FS process was modified. It is a new technology to treat green billet of ceramic in very short time, applicable to other ceramics, and beneficial to regulate the FS process.

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Section: Resultsmentioning

confidence: 99%

Dielectric barrier discharge based defect engineering method to assist flash sintering

Zhao¹,

Yan²,

Li³

et al. 2023

Journal of Advanced Ceramics

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“…The material surfaces could potentially have carbon-containing peaks corresponding to C–C/C–H (∼284.8 eV), C–O/C–OH (∼286.3 eV), C = O (∼287.4 eV), and O–C = O (∼288.8 eV). 29,32–34 For Material A (PE) and Material B (PP), APPJ treatment created 4.21% and 6.36% of C–O/C–OH, respectively. For Material C (PET), the content of C = O was increased by 5.19% and that of O–C = O by 2.82%.…”

Section: Resultsmentioning

confidence: 99%

“…The decrease of the contact angles indicated that the materials became more hydrophilic after the APPJ treatment. As the materials were not ideally smooth and flat, and the fabrics even had very porous structures, the APPJ treatment could penetrate the material, 20,29,30 leading to numerous wicking tunnels. The overall improvement of hydrophilicity might be more significant than the decrease percentage of the static surface water contact angle.…”

Section: Water Contact Anglementioning

confidence: 99%

The influence of surface hydrophilicity on the adhesion properties of wet fabrics or films to water

Lou

Qiu

Jin

et al. 2017

Textile Research Journal

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The adherence of wet fabrics to the skin brings much discomfort. The relationship between hydrophilicity and adhesion properties of fabric materials is investigated. A theoretical expression is given to describe the relationship of adhesion force, water contact angle (WCA), and radius of fabric–liquid interface. The adhesion force grows with decreasing WCA and increasing radius of the fabric–liquid interface. With the help of atmospheric pressure plasma jet (APPJ) treatment, the hydrophilicity of the fabric materials is improved, accompanied by reduced WCA, roughened fiber surfaces, as observed by scanning electronic microscope (SEM), and increased Oxygen/Carbon (O/C) atomic ratio and polar bonds, analyzed by X-ray photoelectron spectroscopy (XPS). In accordance with the theoretical conclusion, the APPJ treated fabrics have a much larger maximum adhesion force and longer adhesion duration with water, indicating more discomfort resulting from the increase of hydrophilicity when they are wet. To minimize the discomfort caused by wet adhesion, less hydrophilic fabric surfaces may be preferred.

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“…However, the application of CS in textile has been restricted due to the poor cohesion between fiber surface and CS [8,[15][16][17]. In order to enhance physical adsorption and chemical combination, the fiber surface can be modified to enhance surface roughness and introduce polar groups by low temperature plasma [18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of wetting pretreatment on structure and properties of plasma induced chitosan grafted wool fabric

Wang

et al. 2015

Fibers Polym

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Chitosan (CS) was grafted on the wool after being wetted at different relative humidity (5 %, 65 % and 95 % RH) and induced by O 2 plasma to investigate the influence of wetting pretreatment on the structure and properties of plasma induced chitosan (PICS)-grafted wool fabric. The effects of the RH of wetting pretreatment, CS concentration and grafting time on weight gain ratio and PICS-grafted wool fabric properties including wettability, dyeability and shrink resistance were studied. Scanning electron microscopy (SEM) observation showed that the scales on the wool fiber wetted at 95 % RH and then treated by O 2 plasma were more severely damaged. The surface roughness and polar group content of PICS-grafted wool fabrics increased with the RH of wetting pretreatment. The analysis results of surface morphology by SEM and chemical composition by X-ray photoelectron spectroscopy (XPS) revealed much more CS on the surface of PICS-grafted wool fabric wetted at 95 % RH. The analysis results of weight gain ratio, contact angle, K/S value and area felting shrinkage manifested the optimum parameters of PICS grafting on the wool fabric wetted at 95 % RH could be set as the chitosan concentration of 2 g/l and the grafting time of 2 h. The machine washable wool fabric with the area felting shrinkage of 4.5 % and the better wettability and dyeability could be obtained by a new ecologically acceptable process of PICS grafting on the wool wetted at 95 % RH.

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Influence of pore size on penetration of surface modification into woven fabric treated with atmospheric pressure plasma jet

Cited by 13 publications

References 23 publications

Dielectric barrier discharge based defect engineering method to assist flash sintering

Dielectric barrier discharge based defect engineering method to assist flash sintering

The influence of surface hydrophilicity on the adhesion properties of wet fabrics or films to water

Effect of wetting pretreatment on structure and properties of plasma induced chitosan grafted wool fabric

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